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- W2182447348 abstract "Excess Soil Moisture (ESM) in varying forms posses serious threat to overall production and productivity of maize in Asian region particularly in South East Asia and India. Maize responds differently to ESM conditions at different stages of its life cycle. Further a particular genotype shows differential behaviour to varying levels of waterlogging stress. Seedling stage being very susceptible to excess soil water as was observed in cup screening experiment. Out of 15 genotypes (parents and their crosses made in half diallel fashion), sussceptible genotypes performed poorly and did not reach two leaf stage or even germinated. Most of the genotypes were grouped into first three classes out of the total pre assigned five classes on the basis of their response to waterlogging, reflecting the degree of susceptibility at seedling stage in maize. In normal cup screening trial all the genotypes performed normally. At knee height stage, responses to ESM in different genotypes showed fair correspondence with the responses at seedling. Flooding at knee height stage of the crop growth resulted in immediate wilting of plants starting from the base of the plant and subsequent lodging of most of the plants. In leaves, wilting started from the tip and proceeded towards the base of the leaf. In tolerant genotypes there was profuse appearance of adventitious roots on even up to five nodes in some cases. In most of the genotypes Anthesis Silking Interval (ASI) got widened even more than eight days in some cases was recorded, which subsequently resulted in barrenness of plants and reduction of overall yield. Plant height and ear height was severely affected and in almost all genotypes there was reduction in plant height due to flooding treatment. Physiological traits also got affected due to flooding. There was decrease in transpiration rate and Photosynthetically Active Radiation (PAR) got increases in most of the genotypes due to flooding. SPAD values (relative greenness) of the plants got reduced. There was no sinificant change in leaf temperature in most of the cases. Drastic reduction in most of the genotypes was observed but still Pop 3121 and Pop 3118 showed fairly better yields under waterlogged conditions. ASI and PAR showed negative correlation with yield while as nodes bearing adventitious roots showed positive correlation with yield under water logged conditions. In most of the genotypes there was fading of leaf colour immediately after flooding treatment as reflected by their corresponding SPAD values. Tarun 83 showed immediate epinastic effects in the upper leaves on flooding" @default.
- W2182447348 created "2016-06-24" @default.
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- W2182447348 date "2009-01-01" @default.
- W2182447348 modified "2023-09-27" @default.
- W2182447348 title "Response of Maize (Zea mays L.) To Excess Soil Moisture (ESM) Tolerance at Different Stages of Life Cycle" @default.
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